add markdown support

plugins/markdown-it.ts

@@ -0,0 +1,47 @@
+import md, { type Options } from 'markdown-it'
+// @ts-ignore
+import mki from 'markdown-it-latex2img'
+
+const options: Options = {
+    // Enable HTML tags in source
+    html: true,
+
+    // Use '/' to close single tags (<br />).
+    // This is only for full CommonMark compatibility.
+    xhtmlOut: true,
+
+    // Convert '\n' in paragraphs into <br>
+    breaks: true,
+
+    // CSS language prefix for fenced blocks. Can be
+    // useful for external highlighters.
+    langPrefix: 'language-',
+
+    // Autoconvert URL-like text to links
+    linkify: true,
+
+    // Enable some language-neutral replacement + quotes beautification
+    // For the full list of replacements, see https://github.com/markdown-it/markdown-it/blob/master/lib/rules_core/replacements.mjs
+    typographer: true,
+
+    // Double + single quotes replacement pairs, when typographer enabled,
+    // and smartquotes on. Could be either a String or an Array.
+    //
+    // For example, you can use '«»„“' for Russian, '„“‚‘' for German,
+    // and ['«\xA0', '\xA0»', '‹\xA0', '\xA0›'] for French (including nbsp).
+    quotes: '“”‘’',
+
+    // Highlighter function. Should return escaped HTML,
+    // or '' if the source string is not changed and should be escaped externally.
+    // If result starts with <pre... internal wrapper is skipped.
+    highlight: function (/*str, lang*/) { return ''; }
+}
+
+export default defineNuxtPlugin(() => {
+    const render = md(options).use(mki, { "throwOnError": true, "errorColor": " #cc0000" })
+    return {
+        provide: {
+            mdRender: render
+        }
+    }
+})